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Old 01-19-2024, 02:46 AM   #1
beedaddy
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Problem with fractional scaling

I'm running GNOME with fractional scaling (150%) on a HiDPI display. The Calibre UI looks very good here, except the ebook-viewer. It opens ebooks initially too small (not fitting the the window size) which can be fixed my resizing the window slightly. But besides that, the fonts (both, of the e-book and the viewer-ui) look coarse and washed-out.

With a scaling of 100% or 200%, everything looks ok.

Is there anything I can do about it? I wonder why it happens only in ebook-viewer.

(Running the official binary install (calibre 7.3) on Fedora Linux 39)
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Last edited by beedaddy; 01-19-2024 at 02:49 AM.
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Old 01-19-2024, 02:50 AM   #2
kovidgoyal
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because only the viewer uses qt webengine and no nothing you can do about it.
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Old 03-10-2024, 11:47 AM   #3
DrLimu
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I use KDE rather than GNOME, but I had a similar problem. Setting the environment varaible
Code:
QT_SCALE_FACTOR_ROUNDING_POLICY=RoundPreferFloor
solved the problem for me, and now fonts look good in both the editor and the viewer.
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